In the Linux kernel, the following vulnerability has been resolved:

USB: ldusb: fix use-after-free on disconnect race

mutex_unlock() may access the mutex structure after releasing the lock
and therefore cannot be used to manage lifetime of objects directly
(unlike spinlocks and refcounts). [1][2]

Use a kref to release the driver data to avoid use-after-free in
mutex_unlock() when release() races with disconnect().

[1] a51749ab34d9 ("locking/mutex: Document that mutex_unlock() is
                   non-atomic")
[2] 2b9d9e0a9ba0 ("locking/mutex: Clarify that mutex_unlock(), and most
                   other sleeping locks, can still use the lock object
                   after it's unlocked")

https://git.kernel.org/stable/c/02ca08fff74cf9b0a3c4d2cacde1c6edeeb95bb4

https://git.kernel.org/stable/c/19bdfc7b3c179331eafa423d87e1336f43bbfeb8

https://git.kernel.org/stable/c/2107a4fc8ff1cf1d52f416c1e5cc8e97413a5915

https://git.kernel.org/stable/c/a3e794136ab5e3ad1e7019175a4b837aec86db4b

https://git.kernel.org/stable/c/af59829e67e11ba2511a9f8e4b9111afc7d1f550

https://git.kernel.org/stable/c/d8f69404e1d671326f86d378b9f5bfbd56490e9d

https://git.kernel.org/stable/c/e5a9bdce4bfd3e2226b5f3df5fb8385d6935ee69

https://git.kernel.org/stable/c/fc55923a972e715f9a27187b47d4920709e23d85

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